尖塔后面的卫星
(原标题: Satellites Behind Pinnacles)
2022-06-14
浏览次数: 15
背景上那些条纹是什么？卫星轨迹。首先，前景是风景如画的石丘，被称为尖塔。这些人类大小的尖塔发现于西澳大利亚的南邦国家公园，由古代贝壳（石灰石）制成，工艺不详。不过，或许更引人注目的是背后的天空。所有这些条纹都是由反射阳光的近地轨道卫星在不到两个小时的时间内拍摄到的，并通过数字技术组合成一幅单幅特征图像，前景是由同一台相机在同一地点连续拍摄的。大多数条纹是由发展中的星链通信卫星星座制造的，但也有一些不是。一般来说，这些条纹表明在黄昏和黎明之前，地球上空几乎连续可见的卫星数量在增加。了解并消除卫星轨迹对地球地面相机和望远镜图像的影响，不仅对优雅的天体摄影很重要，而且对人类对遥远宇宙的科学理解也很重要。天体物理学家：浏览天体物理学源代码库中的2800多个代码
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What are all those streaks across the background? Satellite trails. First, the foreground features picturesque rock mounds known as Pinnacles. Found in the Nambung National Park in Western Australia, these human-sized spires are made by unknown processes from ancient sea shells (limestone). Perhaps more eye-catching, though, is the sky behind. Created by low-Earth orbit satellites reflecting sunlight, all of these streaks were captured in less than two hours and digitally combined onto the single featured image, with the foreground taken consecutively by the same camera and from the same location. Most of the streaks were made by the developing Starlink constellation of communication satellites, but some are not. In general, the streaks are indicative of an increasing number of satellites nearly continuously visible above the Earth after dusk and before dawn. Understanding and removing the effects of satellite trails on images from Earth's ground-based cameras and telescopes is now important not only for elegant astrophotography, but for humanity's scientific understanding of the distant universe. Astrophysicists: Browse 2,800+ codes in the Astrophysics Source Code Library
© Joshua Rozells